OK, so this took about a week longer than expected because I kept running into a variety of hardware problems. My Timex Sinclair 1000 and 1500 both died in the course of filming this. I didn't have a television that could display PAL so I couldn't show the ZX81 working properly other than screen captures from an emulator. As a result I was also not able to get the printer working. But I really wanted to finish this video up, so I put together what I had. I hope it is good enough.